1、导入需要的jar包：itext-asian-5.2.0.jar itextpdf-5.5.11.jar。
2、新建word文档，创建模板，将文件另存为pdf，并用Adobe Acrobat DC打开编辑，点击右侧【准备表单】后点击【开始】
3、在需要插入数据的空白处，右击，点击【文本域】，将文本域拖放到你想要的位置，更改域名称为你传入的变量名。
4、保存文件，将文件放到项目中。生成pdf代码如下：
1 public static void creatPdf(Map<String, Object> map,String filePath) { 2 try { 3 BaseFont bf = BaseFont.createFont("c://windows//fonts//simsun.ttc,1", BaseFont.IDENTITY_H, 4 BaseFont.EMBEDDED); 5 FileOutputStream out = new FileOutputStream(filePath);// 输出流 6 PdfReader reader = new PdfReader(TemplateToWord.class.getResource("/com/cn/business/templates/report.pdf"));// 读取pdf模板 7 ByteArrayOutputStream bos = new ByteArrayOutputStream(); 8 PdfStamper stamper = new PdfStamper(reader, bos); 9 stamper.setFormFlattening(true); 10 AcroFields form = stamper.getAcroFields(); 11 // 文字类的内容处理 12 Map<String, String> datemap = (Map<String, String>) map.get("datemap"); 13 form.addSubstitutionFont(bf); 14 for (String key : datemap.keySet()) { 15 String value = datemap.get(key); 16 form.setField(key, value); 17 } 18 // 图片类的内容处理 19 Map<String, String> imgmap = (Map<String, String>) map.get("imgmap"); 20 for (String key : imgmap.keySet()) { 21 String value = imgmap.get(key); 22 String imgpath = value; 23 int pageNo = form.getFieldPositions(key).get(0).page; 24 Rectangle signRect = form.getFieldPositions(key).get(0).position; 25 float x = signRect.getLeft(); 26 float y = signRect.getBottom(); 27 // 根据路径读取图片 28 Image image = Image.getInstance(imgpath); 29 // 获取图片页面 30 PdfContentByte under = stamper.getOverContent(pageNo); 31 // 图片大小自适应 32 image.scaleToFit(signRect.getWidth(), signRect.getHeight()); 33 // 添加图片 34 image.setAbsolutePosition(x, y); 35 under.addImage(image); 36 } 37 // 表格类 38 Map<String, List<List<String>>> listMap = (Map<String, List<List<String>>>) map.get("list"); 39 for (String key : listMap.keySet()) { 40 List<List<String>> lists = listMap.get(key); 41 int pageNo = form.getFieldPositions(key).get(0).page; 42 PdfContentByte pcb = stamper.getOverContent(pageNo); 43 Rectangle signRect = form.getFieldPositions(key).get(0).position; 44 //表格位置 45 int column = lists.get(0).size(); 46 int row = lists.size(); 47 PdfPTable table = new PdfPTable(column); 48 float tatalWidth = signRect.getRight() - signRect.getLeft() - 1; 49 int size = lists.get(0).size(); 50 float width[] = new float[size]; 51 for(int i=0;i<size;i++){ 52 if(i==0){ 53 width[i]=60f; 54 }else{ 55 width[i]=(tatalWidth-60)/(size-1); 56 } 57 } 58 table.setTotalWidth(width); 59 table.setLockedWidth(true); 60 table.setKeepTogether(true); 61 table.setSplitLate(false); 62 table.setSplitRows(true); 63 Font FontProve = new Font(bf, 10, 0); 64 //表格数据填写 65 for(int i=0;i<row;i++){ 66 List<String> list = lists.get(i); 67 for(int j=0;j<column;j++){ 68 Paragraph paragraph = new Paragraph(String.valueOf(list.get(j)), FontProve); 69 PdfPCell cell = new PdfPCell(paragraph); 70 cell.setBorderWidth(1); 71 cell.setVerticalAlignment(Element.ALIGN_CENTER); 72 cell.setHorizontalAlignment(Element.ALIGN_CENTER); 73 cell.setLeading(0, (float) 1.4); 74 table.addCell(cell); 75 } 76 } 77 table.writeSelectedRows(0, -1, signRect.getLeft(), signRect.getTop(), pcb); 78 } 79 stamper.setFormFlattening(true);// 如果为false，生成的PDF文件可以编辑，如果为true，生成的PDF文件不可以编辑 80 stamper.close(); 81 Document doc = new Document(); 82 PdfCopy copy = new PdfCopy(doc, out); 83 doc.open(); 84 int pageNum = reader.getNumberOfPages(); 85 for(int i = 1;i <= pageNum;i++){ 86 PdfImportedPage importPage = copy.getImportedPage(new PdfReader(bos.toByteArray()), i); 87 copy.addPage(importPage); 88 } 89 doc.close(); 90 } catch (IOException e) { 91 System.out.println(e); 92 } catch (DocumentException e) { 93 System.out.println(e); 94 } 95 96 }
参数：
1 //文字类 2 Map<String, String> dataMap = new HashMap<String, String>(); 3 dataMap.put("title", title+time); 4 5 //图片 6 String knowImgPath = "D:\\upload\\report\\knowImg.png"; 7 Map<String, String> imgMap = new HashMap<String, String>(); 8 imgMap.put("knowImg", knowImgPath); 9 10 //表格 一行数据是一个list 11 List<String> list = new ArrayList<String>(); 12 list.add("日期"); 13 list.add("金额"); 14 15 List<String> list2 = new ArrayList<String>(); 16 list2.add("2018-01-01"); 17 list2.add("100"); 18 19 List<List<String>> List = new ArrayList<List<String>>(); 20 List.add(list); 21 List.add(list2); 22 23 Map<String, List<List<String>>> listMap = new HashMap<String, List<List<String>>>(); 24 listMap.put("eventList", List); 25 26 Map<String, Object> o = new HashMap<String, Object>(); 27 o.put("datemap", dataMap); 28 o.put("imgmap", imgMap); 29 o.put("list", listMap); 30 31 String knowImgPath = "D:\\upload\\report\\report.pdf"; 32 creatPdf(o,filePath);